Calculate number of dates within a column based on Month

Hi,

I have a column say column B for example that has a list of dates in the format dd/mm/yyyy. I would like a summary at the top of the columns to state how many dates there are for the current month. But I wondered if this was possible based on the TODAY() function or similar. Thus the user would not have to change anything.

So for example at the start of the month it may state 14. Half way through the month down to 6 and at the end of the month 0 for example.

Also is this possible with the month ahead based on the same principle?

Thanks.